If the MQL strategy/indicator uses custom dll https://www.dukascopy.com/wiki/files/, then one needs to locate the dll folder in the parameter dialog (e.g. <i>C:/Program Files/MetaTrader/experts/libraries</i>):<br/><img src="https://www.dukascopy.com/wiki/files//ConnectorParams_DllFolder.png" border="0" /><br/>For Windows system dlls (e.g. User32.dll. Kernel32.dll, etc.) the path does not need to get set.<br/><b>Note:</b> Functionality available with with JForex-API 2.7.2.